<script setup>
import {
  Edit,
  Delete
} from '@element-plus/icons-vue'

import {computed, ref, watch} from 'vue'

//文章分类数据模型
const categorys = ref([])

//用户搜索时选中的分类id
const categoryId = ref('')

//用户搜索时选中的发布状态
const state = ref('')

//文章列表数据模型
const articles = ref([])

//分页条数据模型
const pageNum = ref(1)//当前页
const total = ref(20)//总条数
const pageSize = ref(3)//每页条数

//当每页条数发生了变化，调用此函数
const onSizeChange = (size) => {
  pageSize.value = size
  articleList()
}

//当前页码发生变化，调用此函数
const onCurrentChange = (num) => {
  pageNum.value = num
  articleList()
}

//回显文章分类
import {
  articleAddService,
  articleCategoryListService, articleDeleteService,
  articleListService
} from '@/api/admin/article.js'
const articleCategoryList = async () => {
  let result = await articleCategoryListService();

  categorys.value = result.data;
}

//获取文章列表数据
const articleList = async () => {
  let params = {
    pageNum: pageNum.value,
    pageSize: pageSize.value,
    categoryId: categoryId.value ? categoryId.value : null,
    state: state.value ? state.value : null
  }
  let result = await articleListService(params);

  //渲染视图
  total.value = result.data.total;
  articles.value = result.data.items;

  //处理数据,给数据模型扩展一个属性categoryName,分类名称
  for (let i = 0; i < articles.value.length; i++) {
    let article = articles.value[i];
    for (let j = 0; j < categorys.value.length; j++) {
      if (article.categoryId === categorys.value[j].id) {
        article.categoryName = categorys.value[j].categoryName;
      }
    }
  }
}

articleCategoryList()
articleList()

import { QuillEditor } from '@vueup/vue-quill'
import '@vueup/vue-quill/dist/vue-quill.snow.css'
import { Plus } from '@element-plus/icons-vue'
import '../../../assets/css/markdown_blue.css';

const userInfoStore = useUserInfoStore();
//控制抽屉是否显示
const visibleDrawer = ref(false)
//添加表单数据模型
const articleModel = ref({
  title: '',
  categoryId: '',
  summary: '',
  coverImg: '',
  content: '',
  state: '',
  schoolId: userInfoStore.info.schoolId
})


//导入token
import { useTokenStore } from '@/stores/token.js';
const tokenStore = useTokenStore();

const renderedMarkdown = ref('')

watch(() => articleModel.value.content, (newContent) => {
  renderedMarkdown.value = marked(newContent);
}, { immediate: true });

//上传成功的回调函数
const uploadSuccess = (result)=>{
  articleModel.value.coverImg = result.data;
  // console.log(result.data);
}

//添加文章
import {ElMessage, ElMessageBox} from 'element-plus'
import {marked} from "marked";
import useUserInfoStore from "@/stores/userinfo.js";
const addArticle = async (clickState)=>{
  //把发布状态赋值给数据模型
  articleModel.value.state = clickState;

  //调用接口
  let result = await articleAddService(articleModel.value);

  ElMessage.success(result.msg? result.msg:'添加成功');

  //让抽屉消失
  visibleDrawer.value = false;

  //刷新当前列表
  await articleList()

}
const deleteArticle = (row) => {
  // 提示用户确认框
  ElMessageBox.confirm(
      '你确认要删除该文章信息吗?',
      '温馨提示',
      {
        confirmButtonText: '确认',
        cancelButtonText: '取消',
        type: 'warning',
      }
   )
      .then(async () => {
        try {
          // 调用接口
          await articleDeleteService(row.id);
          ElMessage({
            type: 'success',
            message: '删除成功',
          });
          // 刷新列表
          await articleList();
        } catch (error) {
          if (error.response && error.response.status === 400) {
            const errorMessage = error.response.data.message || '删除失败';
            ElMessage({
              type: 'error',
              message: errorMessage,
            });
          } else {
            ElMessage({
              type: 'error',
              message: '删除失败:' + error.message,
            });
          }
        }
      })
      .catch(() => {
        ElMessage({
          type: 'info',
          message: '用户取消了删除',
        });
      });
};
</script>
<template>
  <el-card class="page-container">
    <template #header>
      <div class="header">
        <span>文章管理</span>
        <div class="extra">
          <el-button type="primary" @click="visibleDrawer = true">添加文章</el-button>
        </div>
      </div>
    </template>
    <!-- 搜索表单 -->
    <el-form inline>

      <el-form-item label="文章分类：">
        <el-select placeholder="请选择" v-model="categoryId" style="width: 150px">
          <el-option v-for="c in categorys" :key="c.id" :label="c.categoryName" :value="c.id">
          </el-option>
        </el-select>
      </el-form-item>

      <el-form-item label="发布状态：">
        <el-select placeholder="请选择" v-model="state" style="width: 150px">
          <el-option label="已发布" value="已发布"></el-option>
          <el-option label="草稿" value="草稿"></el-option>
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" @click="articleList">搜索</el-button>
        <el-button @click="categoryId = ''; state = ''">重置</el-button>
      </el-form-item>
    </el-form>
    <!-- 文章列表 -->
    <el-table :data="articles" style="width: 100%">
      <el-table-column label="文章标题" width="200px" prop="title"></el-table-column>
      <el-table-column label="文章封面">
        <template #default="scope">
          <img :src="scope.row.coverImg" alt="文章封面" style="width: 100px; height: auto;border-radius: 5px" />
        </template>
      </el-table-column>
      <el-table-column label="分类" prop="categoryName"></el-table-column>
      <el-table-column label="发表时间" prop="createTime"> </el-table-column>
      <el-table-column label="状态" prop="state"></el-table-column>
      <el-table-column label="操作" width="100">
        <template #default="{ row }">
          <el-button :icon="Edit" circle plain type="primary" @click="showDialog(row)"></el-button>
          <el-button :icon="Delete" circle plain type="danger" @click="deleteArticle(row)"></el-button>
        </template>
      </el-table-column>
      <template #empty>
        <el-empty description="没有数据" />
      </template>
    </el-table>
    <!-- 分页条 -->
    <el-pagination v-model:current-page="pageNum" v-model:page-size="pageSize" :page-sizes="[3, 5, 10, 15]"
                   layout="jumper, total, sizes, prev, pager, next" background :total="total" @size-change="onSizeChange"
                   @current-change="onCurrentChange" style="margin-top: 20px; justify-content: center" />

    <!-- 抽屉 -->
    <el-drawer v-model="visibleDrawer" title="添加文章" direction="rtl" size="80%">
      <!-- 添加文章表单 -->
      <el-form :model="articleModel" label-width="100px">
        <el-form-item label="文章标题">
          <el-input v-model="articleModel.title" placeholder="请输入标题" style="width: 200px"></el-input>
        </el-form-item>
        <el-form-item label="文章分类">
          <el-select placeholder="请选择" v-model="articleModel.categoryId" style="width: 200px">
            <el-option v-for="c in categorys" :key="c.id" :label="c.categoryName" :value="c.id">
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="文章封面">

          <!--
              auto-upload:设置是否自动上传
              action:设置服务器接口路径
              name:设置上传的文件字段名
              headers:设置上传的请求头
              on-success:设置上传成功的回调函数
           -->

          <el-upload class="avatar-uploader" :auto-upload="true" :show-file-list="false"
                     action="/api/upload"
                     name="file"
                     :headers="{'Authorization':tokenStore.token}"
                     :on-success="uploadSuccess"
          >
            <img v-if="articleModel.coverImg" :src="articleModel.coverImg" class="avatar" />
            <el-icon v-else class="avatar-uploader-icon">
              <Plus />
            </el-icon>
          </el-upload>
        </el-form-item>
        <el-form-item label="文章摘要">
          <el-input v-model="articleModel.summary" placeholder="请输入摘要" style="width: 200px"></el-input>
        </el-form-item>
        <el-form-item label="文章内容">
          <div class="editor" style="width: 40%">
            <quill-editor theme="snow" v-model:content="articleModel.content" contentType="text">
            </quill-editor>
          </div>
          <div class="article-page" style="width: 40%">
            <div id="nice" class="article-content" v-html="renderedMarkdown"></div>
          </div>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="addArticle('已发布')">发布</el-button>
          <el-button type="info" @click="addArticle('草稿')">草稿</el-button>
        </el-form-item>
      </el-form>
    </el-drawer>
  </el-card>
</template>
<style lang="scss" scoped>
.page-container {
  min-height: 100%;
  box-sizing: border-box;

  .header {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
}

/* 抽屉样式 */
.avatar-uploader {
  :deep() {
    .avatar {
      width: 178px;
      height: 178px;
      display: block;
    }

    .el-upload {
      border: 1px dashed var(--el-border-color);
      border-radius: 6px;
      cursor: pointer;
      position: relative;
      overflow: hidden;
      transition: var(--el-transition-duration-fast);
    }

    .el-upload:hover {
      border-color: var(--el-color-primary);
    }

    .el-icon.avatar-uploader-icon {
      font-size: 28px;
      color: #8c939d;
      width: 178px;
      height: 178px;
      text-align: center;
    }
  }
}

.editor {
  width: 100%;

  :deep(.ql-editor) {
    min-height: 200px;
  }
}

.MdShow {
  width: 400px;
  height: 210px;
  border: 1px solid #ccc;
  padding: 20px;
}

.article-page {
  margin-left: 30px;
  width: 100%;
  min-height: 210px;
  border: 1px solid #ccc;
  padding: 20px;
}
</style>
